About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Magnetic Materials
|
Presentation Title |
Magnetovolume Effects in Metamagnetic Shape Memory Heusler Compounds |
Author(s) |
Patricia Lazpita, Victor L'vov, Jesús Rodríguez Fernández, Jose Manuel Barandiarán, Volodymyr Chernenko |
On-Site Speaker (Planned) |
Patricia Lazpita |
Abstract Scope |
Heusler metamagnetic shape memory compounds (MMSMAs) show a large functional response related to a first order martensitic transformation (MT). The strong magnetostructural coupling together with mixed magnetic interactions (ferromagnetic, antiferromagnetic or paramagnetic) enable controlling the MT by means of magnetic field resulting in different multifunctional properties such as giant magnetoresistance, MMSM effect, or inverse magnetocaloric effect. The shift rate of MT as a function of the magnetic field, external stresses or their combination is a key parameter for the development of these effects.
In this work, we review our last work on these alloys, where we analyze the effect of both, the hydrostatic pressure and the uniaxial compressive stress, together with the magnetic field on the MT for NiMnIn and MnNiSnFe MMSMAs. The role of the magnetovolume coupling and the magnetic nature of the different phases in the MT is explained in the framework of the thermodynamic theory. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, Characterization, Magnetic Materials |